Custom Air

How G-Site Helped Custom Air Turn Trusted Service into Scalable Revenue

Through G-Site’s Sales-First platform, integrating SEO, local ads, AI booking, A/B testing, and automated lead generation, Custom Air achieved a 40× return on total investment, 75% above its lead goal, and 3× overall business growth within just a few years.

Revenue Growth
Case Study

Client: Custom Air Conditioning and Heating Co.

Industry: HVAC (Residential + Commercial)

Agency: G-Site

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“G-Site helped us exceed our goals. We’re getting more calls, our rankings are up, and the results speak for themselves: over 40× ROI and record-breaking lead flow.”

Client Overview

Founded in 1976, Custom Air Conditioning and Heating Co. is a family-owned HVAC company serving residential and commercial clients across Central Ohio. Known for dependable service, upfront pricing, and 24/7 emergency support, Custom Air has built over 40 years of trust in the community. With 125+ employees, multiple service offices, and partnerships with brands like Trane, Bryant, and Mitsubishi Electric, the company is recognized for quality workmanship and customer satisfaction.

Client Challenge

Despite a strong reputation, Custom Air faced a familiar challenge for established HVAC companies modernizing its digital presence to compete with aggressive local advertisers. Key pain points included:

  • Outdated website not optimized for conversions
  • Limited visibility in Google search results
  • Inconsistent lead tracking and attribution
  • High cost per lead from scattered marketing efforts

Custom Air needed a data-driven, ROI-focused marketing system that could scale lead generation while maintaining its brand reputation.

Solution: G-Site’s Sales-First System

G-Site implemented a fully integrated growth system focused on turning traffic into booked appointments.

1. High-Performance Website

Redesigned for conversions with clear CTAs, trust signals, and service-area targeting that positioned Custom Air as the top HVAC provider in Central Ohio.

2. SEO & Local Ranking

Optimized Google Business listings, local landing pages, and schema markup for Columbus, Delaware, and Dublin. Within months, Custom Air ranked among the top local HVAC providers for high-intent keywords.

3. Local Ads

Highly targeted Google Ads focused on high-value services (AC repair, furnace installation, and emergency calls) with call tracking and performance-based optimization.

4. AI-Powered A/B Testing

G-Site’s AI engine continuously tested headlines, offers, and CTAs to improve conversion rates automatically no guesswork needed.

5. AI Chat & Booking

24/7 AI chat converted after-hours visitors into appointments, capturing leads that would have otherwise been lost.

6. Lead Generation & Analytics

All marketing channels were tied into one dashboard, allowing Custom Air to measure cost per lead, ROI, and campaign performance in real time.

Results

The outcome was transformative both digitally and financially.

40× ROI on total marketing investment
75% above lead goal within campaign period
3× revenue growth since partnership began
Cost per lead cut by more than half
Top 3 Google rankings across primary service areas

“Just in the past few years since our partnership with G-Site began, Custom Air Conditioning and Heating has grown by over 3×.”

Conclusion

By aligning Custom Air’s decades-old reputation with modern, measurable marketing, G-Site turned a trusted local HVAC brand into a data-driven growth machine.
The partnership delivered both massive ROI and sustainable long-term scalability, proving that with the right system, even established companies can grow exponentially.

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